Neighbour Hacked a Structural Wall
Without Approval in Malaysia: Serious Offence & Your Remedies

This guide provides general legal information only — not legal advice. If you believe structural works are creating imminent danger, contact your local authority and a structural engineer immediately. For legal advice, consult a qualified Malaysian property lawyer.

What is a structural wall?

A structural wall (also called a load-bearing wall) is a wall that carries the weight of the floors or roof above it and transmits that load down to the foundation. Removing or significantly weakening a structural wall without proper engineering can cause partial or total collapse of the structure above it.

A party wall in terrace houses or strata buildings (the wall shared between two units) may also be structural, depending on the building design.

How to tell if a wall may be structural:

• It runs perpendicular to the floor beams or is directly above a beam or column in the storey below.
• It is a thicker wall — structural walls in Malaysian residences are typically 230 mm (9-inch) brick, compared to 115 mm (4.5-inch) partition walls.
• It is shown as a dark or bold line on the architectural plan (you can request this from the developer or Land Office).
• A licensed structural engineer or the original developer’s as-built drawings can confirm definitively.

Why hacking a structural wall without approval is extremely serious

Unlike a cosmetic renovation, removing or critically weakening a structural wall creates risks that go far beyond the renovating unit:

• Partial or total structural collapse of the floor or roof above — a risk not just to the renovating unit but to all units above and adjacent.
• Propagating cracks through the building frame, causing long-term structural damage to neighbouring units.
• Foundation settlement if load redistribution is not properly engineered.
• Fire compartment breach — structural walls often double as fire-separation barriers under UBBL 1984; removing them increases fire spread risk to the whole building.

This is why Malaysian law imposes criminal liability — not just civil liability — for structural alterations without approval.

Legal framework

The professional engineer (PE) requirement

Under the Registration of Engineers Act 1967 (Act 138) and the requirements of local authorities under Act 133, any structural alteration to a building must be accompanied by structural engineering drawings prepared and endorsed by a licensed professional engineer (PE) registered with the Board of Engineers Malaysia (BEM) before local-authority building plan approval can be granted (Source: Board of Engineers Malaysia; inspectsolution.pro, Frequently Asked Questions for Professional Engineers in Malaysia).

What this means in practice:

• A homeowner who hacks a structural wall based solely on a contractor’s assessment (without a PE stamp) is proceeding without the required professional sign-off — this is an offence under both Act 133 and the Registration of Engineers Act.
• A PE who endorses inadequate structural drawings is personally liable under the Registration of Engineers Act and the Board of Engineers Malaysia’s Code of Professional Conduct.
• For strata buildings, the building plan approval must be obtained from the local authority AND management approval from the JMB/MC must be obtained under By-law 27 of the Strata Management Regulations 2015 — both are required, not one in lieu of the other.

Offence and penalty comparison

Additional rules for strata buildings

For strata properties, the Strata Management Act 2013 (Act 757) adds further protections (Source: MahWengKwai & Associates, An Introduction to Strata Management By-Laws; KPKT COB guidelines; Pitfalls of Strata Living, Malay Mail):

• Prohibition on structural alterations to common property — structural walls in strata buildings may be common property. No owner may alter or hack common property under any circumstances without management body approval and local-authority approval. This is an absolute prohibition.
• COB powers (Regulations 56 & 67) — the Commissioner of Buildings has jurisdiction to determine responsibility for party wall and structural wall damage and to direct rectification.
• Renovation deposit forfeiture — any renovation deposit paid by the offending owner may be forfeited and applied toward rectification costs.
• Injunction from Tribunal or court — both the Strata Management Tribunal and the civil courts can issue orders to stop works and to restore the structural wall to its original state.

Identifying immediate structural risk

If you suspect your neighbour has hacked a structural wall and you are noticing signs of structural stress in your own unit, treat it as an emergency:

• Diagonal cracks spreading from corners of doors or windows (not hairline cracks — cracks wider than 1 mm).
• Doors or windows suddenly sticking or no longer closing correctly — a sign of frame distortion.
• Visible deflection of the ceiling or floor.
• Cracking sounds from the ceiling or beams.

If you see any of these signs after your neighbour’s structural hacking:

• Contact your local authority immediately (DBKL, MBPJ, etc.) for an emergency building inspection.
• Engage a licensed structural engineer independently to assess your unit.
• Consider temporary evacuation until structural safety is confirmed.

How to get a stop-work order

A stop-work notice (Notis Perintah Berhenti Kerja) under Act 133 is the fastest way to halt dangerous structural hacking. To get one:

• Call or visit your local authority’s Jabatan Kawalan Bangunan immediately and report that structural works are being carried out without approval, creating a risk to life and property. Bring your photographs. If you can demonstrate urgency (e.g. active hacking of a structural wall), councils can issue a stop-work notice the same day.
• Report to your JMB/MC in writing (strata) and request they invoke the stop-works power under the strata by-laws at the same time. Management can issue their own stop-work direction to the owner under the by-laws.
• Apply for an urgent interim injunction from the High Court if: (a) the local authority is not responding quickly enough; and (b) the works create an imminent risk of structural collapse. An ex parte injunction (without first notifying the other side) can be obtained within days. You will need to engage a property or commercial litigation lawyer.

Compensation: Tribunal vs civil court

Step-by-step action plan

• Step 1 — Document immediately. Photograph the works from your side. Note the date, what walls are being hacked, and any signs of structural distress you observe in your own unit.
• Step 2 — Report to your local authority’s Jabatan Kawalan Bangunan. State explicitly that structural walls appear to be hacked without a PE endorsement or approved building plan. Request an immediate inspection and stop-work notice.
• Step 3 — Notify your JMB/MC in writing (strata). Request management to invoke the renovation deposit and issue a stop-works direction to the offending owner.
• Step 4 — File a COB complaint (strata) under Regulations 56 & 67 of the Strata Management Regulations 2015.
• Step 5 — Engage a structural engineer to assess your unit for any structural impact. A structural engineer’s report is essential evidence for any Tribunal or court claim.
• Step 6 — Apply for an interim injunction via a property lawyer if works are ongoing and the local authority has not yet acted.
• Step 7 — File for compensation at the Strata Management Tribunal (strata) or civil court (landed) once you have your engineer’s report and repair quotations.

For related guides, see Party Wall & Shared Walls →, Illegal Renovation by Neighbour →, and Neighbour’s Renovation Damaged Your Unit →.

Evidence checklist

Sources & official references

• Street, Drainage and Building Act 1974 (Act 133) — Attorney General’s Chambers of Malaysia
• Uniform Building By-Laws 1984 (UBBL 1984) — KPKT
• Strata Management Act 2013 (Act 757)
• FAQ for Professional Engineers in Malaysia — InspectSolution
• An Introduction to Strata Management By-Laws — MahWengKwai & Associates
• Commissioner of Buildings (COB) Explained — Ezri Law
• Strata Management Tribunal — strata.my (KPKT)
• Pitfalls of Strata Living — Malay Mail
• Renovating Your Stratified Home — HHQ Law Firm